Wire-straightening device



Aug. 3 1926. v1,594,570

F. H. SLEEPER WIRE STRAIGHTENING DEVICE Filed Dec. 15, 1923 PatentedAug. 3, 1926i.

neu s isaiasi@ FRANK H. SLEEPEB, OF WORCESTER, MASSACHUSETTS, ASSIGNORT0 SLEEPER HARTLEY, INC., 0F WORCESTER, MASSACHUSETTS, A CORPORATION 0FMASSA- cnnsnr'rs.

WIRE-STRAIGHTENTNG DEVICE.

This invention relates to a wire straightening. machine of the type inwhich the wire passes through a series of alternately otl'set. dies in arotating arbor.

The principal object of this invention is to provide guiding devices forthe wire .to cause it to enter the dies, located and arranged with suchrelation to the diesthemselves that they do not involve additionaladjusting and supporting means `and that they will always move with thedies and therefore necessarily always be in the proper position forperforming their function.

Reference is to be had tothe accompanying drawings, in which- F ig. 1 isa side view of a wire straightening arbor with a preferred embodiment ofthis invention applied thereto and shown partly in central section;

Fig. 2 is a horizontal sectional view of the same on the line 2 2 ofFig. l, and

Fig. 3 is a perspective view of one of the dies and corresponding guide.

I am aware of the fact that arbors for straightening wire have beendesigned having pairs of dies adjustably arranged thereon and providedwith individual guides inde-l pendently adjustable to bring them intoproper position with respect to the dies for the purpose of guiding thewire into the dies when it is pushe'd in in an axial direction. Thisinvention is designed to do away with the separate independentadjustment of the guides and also to insure the proper,

location of each guide with respect to its die in all adjusted positionsof the latter.

I have shown the invention as applied to an arbor 10 of well-known form,which consists of a generally cylindrical body mounted to rotate on itslongitudinal axis and to receive the wire therethrough and straighten itas the wireis drawn through it. Tt is shown, as usual, with a crownedpulley 11 at one end for receiving a belt for driving it and withbearings 12 at its opposite ends for supporting it. This arbor isprovided with a passage centrally locatedand extending all the waythrough it for the reception of the wire. This passage is provided withrecesses within which are located pairs of dies 13 and 14. These diesare for the purpose of receiving the wire passing through the arbor andtaking out the irregularities so as to deliver it in a smooth andstraight condition. Behind each die is a screw l5. These screws aremounted in radially threaded recesses .and the screws are intended to-be adjusted so that each pair of dies, except the two end pairs, willbe adjusted off center and arranged alternately as is well understood inthis art.

Instead of going to the expense of providing separate guides for guidingthe wires into each pair of dies, li forni one of each pair of dies, forexample, the one numbered 14, with an integral projection 16. Thisprojection extends toward thel feeding in end of the arbor and isslanted away from the axis of the wire which passes through the arbor.The surface of this slanting projection whichis on the side thereoftoward the wire is provided with a wire guiding groove 17. This is wideat its intake end and gradually narrows down to the width of the groove18 in the die through which the wire passes. This tapering guide groove17 therefore guides the wire into the straightening groove 18 andbetween the two dies .13 and 14. These dies are made usually of amaterial softer than the wire to avoid marring it as their only functionis to straighten out the irregularities and deliver the wire in astraight vand smooth condition.

Tn operation the arbor is set into rotation and the wire is brought intoit from the left hand end through rolls, not shown, andy forced alongaxially. Of course, the wire is guided into the first pair of dieswithout any special means for guiding it other than the central passagethrough the pulley 11. These dies are arranged concentrically with thepulley and receive the wire directly therefrom. Tt then passes alongfrom these dies toward the next pair of dies but strikes the guidepassage 17 and is forced thereb to slide along the passage out of centraposition and into the passage between the two adjacent dies. it goes tothe next pair where it is diverted in the opposite direction, bycorresponding means, and continues on through the arbor until it isfinally discharged from the center thereof at the o posite end. The

From there reasons for ofsettingl'the ies alternately in wire passesdirectly front edges of to the kind of wire being operated upon.A

This is why the adjusting screws are provided.

With the device set up in this way the through the arbor from end to endand directed slightly back and forth without having its progressinterrupted by engagement with the transverse the dies. The operation isperformed quickly and readily on account of the avoidance of thisdifficulty.

By providing the guides 16 integral with the dies 14 the expense of aseparate adjusting device for each one is avoided. Furthermore, theoperator has to pay no attention `to the adjustment of the guides intoproper relation with the dies because they always must be in the properposition to perform their function most evenly, being adjusted with thedies. This involves economy both in construction and in attendance. l

Although I have illustrated and described only a single form of theinvention I am' aware of the fact that modifications can be made thereinby any person skilled in the art without departing from the scope of theinvention as expressed in the claims. Therefore, I do not wish to belimited to all the details of construction herein shown and describedbut what I do claimisz A 1. A wire straightening device comprising arotary arbor having a central passage for the Wire and having aplurality of transverse threaded holes, opposed pairs of grooved diesengaged in said holes, and adjusting screws in said holes back of saiddies, one of each pair of dies having a long inclined lateral extensionprovided with a converging groove to guide the wire into the grooves ofthe dies.

2. A wire straightening device comprising a rotatable arbor having pairsof straightening dies located along it, each pair of dies comprising ashort straight die anda long die rnd said pairs being offset from eachother alternately in opposite directions, the long die of each pairbeing provided with a'i integral projection extending therefroni towardthe entrance end lof the arbor, said short dies all being located backof a longitudinal centralY line, said projections each having a slantingsurface with a tapering groove therein for receiving the advancing endof the wire, said surface being arranged in 'a position to force the endof the wire to travel in the groove and be guided thereby into the spacebetween the two dies of the pair.l

In testimony whereof I have hereunto a l'- ixed my signature.

l FRANK H. SLEEPER.

